An issue in the downloader.php component of TOSEI online store management system v4.02, v4.03, and v4.04 allows attackers to execute a directory traversal.
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.